Separate the observation from the explanation
Write “water appeared at the right side of the hearth after Tuesday’s rain” rather than “the cap leaked again.” The first statement records something you saw; the second selects a cause that may not have been established. Note the time you discovered it, even if you do not know when the water first arrived.
Track more than a yes-or-no rain entry
Record whether the mark was newly wet, whether its size changed and whether any other nearby surfaces were affected. Include recent exterior work and the date of an earlier repair. Weather notes can help frame a professional assessment, but a homeowner’s log cannot prove a particular path through the roof or chimney.
Preserve the baseline before covering the stain
A dated picture taken safely from inside can show the condition before decoration or another repair. Keep earlier estimates and invoices with it. Avoid repainting merely to see whether the mark returns; discuss the source and the condition of affected materials before deciding on interior finishing.
Ask what would count as follow-up evidence
When work is proposed, ask how its result will be reviewed and what to report if the symptom recurs. A return of moisture should lead to reassessment of the evidence, not an automatic order for the same part again. Share your log with ChimneyWorks Group when arranging a Fort Lauderdale leak visit.